“It is unclear whether the elevated rate of lung cancer among HIV-infected persons is due to biological effects of HIV, surveillance bias, or excess smoking. We compared the incidence of lung cancer between HIV-infected and demographically similar HIV-uninfected patients, accounting for smoking and stage of lung cancer at diagnosis. …

“In our cohort of demographically similar HIV-infected and uninfected patients, HIV infection was an independent risk factor for lung cancer after controlling for potential confounders including smoking. The similar stage distribution between the two groups indicated that surveillance bias was an unlikely explanation for this finding.”

The mobile sites include features such as the HIV/AIDS medical practice guidelines (available only in English), a clinical trials search tool, a glossary of HIV/AIDS-related terms, links to HIV/AIDS-related health topics, webpages on annual HIV/AIDS awareness days, and links to the AIDSinfo Facebook and Twitter pages.